. Author manuscript; available in PMC: 2012 Oct 29.

Published in final edited form as: West J Nurs Res. 2012 Mar 21;34(5):578–597. doi: 10.1177/0193945912439251

Table 5.

Correlations (Spearman ρ) Between Adherence Measures

Measure	EEM (6 months, doses)	EEM (4-weeks, doses)	Pill count	Shea Scale	Morisky Scale	Haynes Item	24-hr recall	7-day recall	1-month recall	6-month recall
EEM (6 months, doses)	1.00
EEM (4 weeks, doses)	.726^a	1.00
	<.001
	168
Pill count	.282	.100	1.00
	<.001	.198
	174	168
Shea Scale	−.294	−.236	−.290	1.00
	<.001	.002	<.001
	166	166	166
Morisky	−.282	−.265	−.246	.809	1.00
	<.001	.001	.001	<.00
	166	166	166	166
Haynes	.168	.048	.200	−.403	−.341	1.00
	.031	.537	.010	<.00	<.001
	165	165	165	165	165
24-hr recall	.099	.103	.072	−.116	−.118	.145	1.00
	.210	.191	.363	.139	.133	.066
	163	163	163	163	163	162
7-day recall	.206	.165	.115	−.248	−.203	.108	.162
	.008	.034	.141	.001	.009	.170	.038
	164	164	164	164	164	163	164	1.00
1-month recall	.456	.372	.389	−.592	−.499	.305	.143	.234	1.00
	<.001	<.001	<.001	<.00	<.001	<.001	.068	.002
	164	164	164	164	164	163	164	165
6-month recall	.430	.340	.299	−.557	−.453	.305	.132	.278	.605	1.00
	<.001	<.001	<.001	<.00	<.001	<.001	.095	<.00	<.001
	164	164	164	164	164	163	161	162	162

Note: EEM = electronic event monitoring.

Statistics reported in cells are (from top to bottom) the estimated Spearman rank order (ρ) correlation coefficient, the two-tailed p value, and the available sample size (n).